Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2022

Goodwill And Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the six months ended March 31, 2022 are as follows (dollars in thousands):

	Total
Balance as of September 30, 2021	$	1,128,511
Effect of foreign currency translation		(4,950	)
Balance as of March 31, 2022	$	1,123,561

Summary of Gross Carrying Amounts and Accumulated Amortization of Intangible Assets by Major Class

The following tables summarizes the gross carrying amounts and accumulated amortization of intangible assets by major class (dollars in thousands):

	March 31, 2022
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Remaining Life (Years)
Customer relationships	$	109,202	$	(93,979	)	$	15,223	$	1.9
Technology and patents	$	90,332	$	(89,608	)	$	724	$	1.7
Total	$	199,534	$	(183,587	)	$	15,947

	September 30, 2021
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Remaining Life (Years)
Customer relationships	$	110,485	$	(88,638	)	$	21,847		2.2
Technology and patents		90,738		(87,237	)		3,501		0.9
Total	$	201,223	$	(175,875	)	$	25,348